1 概念理清 2 创建数组 2.1 f1= np.array( [ [1,2,3,4], [2,3,4,5], [3,4,5,6] ]) 其他代码 a= np.array([ [ [3.4,5,6,8], [3,2.4,5,7] ], [ [2.3,4,5,6], [0.9,5,6,1] ], [ [9,6.7,3,2], [1,3,4,5] ] ]) b = np.array(( ( (1,2,3,4),(4,5,6,7),(9,3,4,5) ), ( (0,2,3,4),(4,5,6,7),